How to Insert a String into Another String at a Given Index in Python?聽

Let’s start this article with a quick question to understand your understanding of strings. 馃挰 Question: Can the string objects be modified in Python? What do you think? Well, the fact is String objects are immutable. They cannot be modified. Consider the below example :  Output: Now you might say, replacement operations and insertion operations … Read more

How to Remove Newlines from a List

Problem Formulation and Solution Overview In this article, you’ll learn how to remove the newline character from list elements in Python. To make it more fun, we have the following running scenario: Watts Security has contacted you for assistance. They have been given a flat file containing user account breaches. Upon review, they notice each … Read more

Replace Last Substring Occurrence in Python String

Problem Formulation Given a string, a substring, and a replacement string in Python. String s Substring sub Replacement string repl How to find and replace the last occurrence of sub with the replacement repl in the Python string s? Let’s have a look at a couple of examples to thoroughly understand the problem: Example 1: … Read more

How to Remove a Trailing Newline?

Use str.rstrip() to remove a trailing newline. Given a string s, create a new one without trailing newline character by calling s.rstrip(‘\n’). If you need the string stored in the original variable, simply assign the result to the original variable. Here’s an example: This actually removes all trailing newline characters: If you want to remove … Read more

驴C贸mo extraer n煤meros de una cadena en Python?

Resumen: Para extraer n煤meros de una cadena determinada en Python puedes usar uno de los siguientes m茅todos: Utiliza el m贸dulo regex . Utiliza las funciones split() y append() en una lista. Utiliza una comprensi贸n de lista con las funciones isdigit() y split(). Utiliza el m贸dulo num_from_string. Extraer d铆gitos o n煤meros de una cadena dada puede … Read more

How to Specify the Number of Decimal Places in Python?

Problem Formulation Using Python, we frequently need to deal with different kinds of numbers. We need to ask ourselves how to specify the number of decimal places in Python. By default, any number that includes a decimal point is considered a floating-point number. These binary floating-point numbers are hardware-based and lose accuracy after about 15 … Read more

Python __repr__() Magic Method

Syntax object.__repr__(self) The Python __repr__ method returns a string representation of the object on which it is called. It implements the built-in repr() function. If you call print(x) an object x, Python internally calls x.__str__() to determine the string representation of object x. If this isn’t implemented, Python calls x.__repr__(). We call this a “Dunder … Read more